F: Implementing references

2025-08-13 20:30:36 +03:00 · 2025-08-04 22:58:08 +03:00 · 2025-08-04 22:58:08 +03:00 · 9c51e368a5
commit 9c51e368a5
parent 88f8c4523a
41 changed files with 783 additions and 147 deletions
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@ -128,6 +128,7 @@
    "perfectivity",
    "PNCT",
    "ponomarev",
+    "popleft",
    "PRCL",
    "PRTF",
    "PRTS",
--- a/rsconcept/backend/apps/oss/models/OperationSchemaCached.py
+++ b/rsconcept/backend/apps/oss/models/OperationSchemaCached.py
@ -23,6 +23,7 @@ from apps.rsform.models import (
 from .Argument import Argument
 from .Inheritance import Inheritance
 from .Operation import Operation, OperationType
+from .Reference import Reference
 from .Substitution import Substitution

 CstMapping = dict[str, Optional[Constituenta]]
@ -36,32 +37,31 @@ class OperationSchemaCached:
        self.model = model
        self.cache = OssCache(self)

-    def delete_reference(self, target: Operation, keep_connections: bool = False):
+    def delete_reference(self, target: int, keep_connections: bool = False, keep_constituents: bool = False):
        ''' Delete Reference Operation. '''
-        if keep_connections:
-            referred_operations = target.getQ_reference_target()
-            if len(referred_operations) == 1:
-                referred_operation = referred_operations[0]
-                for arg in target.getQ_as_argument():
-                    arg.pk = None
-                    arg.argument = referred_operation
-                    arg.save()
-        else:
-            pass
-            # if target.result_id is not None:
-            #     self.before_delete_cst(schema, schema.cache.constituents)  # TODO: use operation instead of schema
-        target.delete()
+        if not keep_connections:
+            self.delete_operation(target, keep_constituents)
+            return
+        self.cache.ensure_loaded_subs()
+        operation = self.cache.operation_by_id[target]
+        reference_target = self.cache.reference_target.get(target)
+        if reference_target:
+            for arg in operation.getQ_as_argument():
+                arg.argument_id = reference_target
+                arg.save()
+        self.cache.remove_operation(target)
+        operation.delete()
+

    def delete_operation(self, target: int, keep_constituents: bool = False):
        ''' Delete Operation. '''
        self.cache.ensure_loaded_subs()
        operation = self.cache.operation_by_id[target]
-        schema = self.cache.get_schema(operation)
        children = self.cache.graph.outputs[target]
-        if schema is not None and len(children) > 0:
-            ids = [cst.pk for cst in schema.cache.constituents]
+        if operation.result is not None and len(children) > 0:
+            ids = list(Constituenta.objects.filter(schema=operation.result).values_list('pk', flat=True))
            if not keep_constituents:
-                self.before_delete_cst(schema.model.pk, ids)
+                self._cascade_delete_inherited(operation.pk, ids)
            else:
                inheritance_to_delete: list[Inheritance] = []
                for child_id in children:
@ -707,17 +707,23 @@ class OssCache:
        self._schemas: list[RSFormCached] = []
        self._schema_by_id: dict[int, RSFormCached] = {}

-        self.operations = list(Operation.objects.filter(oss=oss.model).only('result_id'))
+        self.operations = list(Operation.objects.filter(oss=oss.model).only('result_id', 'operation_type'))
        self.operation_by_id = {operation.pk: operation for operation in self.operations}
        self.graph = Graph[int]()
        for operation in self.operations:
            self.graph.add_node(operation.pk)
+
+        references = Reference.objects.filter(reference__oss=self._oss.model).only('reference_id', 'target_id')
+        self.reference_target = {ref.reference_id: ref.target_id for ref in references}
        arguments = Argument.objects \
            .filter(operation__oss=self._oss.model) \
            .only('operation_id', 'argument_id') \
            .order_by('order')
        for argument in arguments:
            self.graph.add_edge(argument.argument_id, argument.operation_id)
+            target = self.reference_target.get(argument.argument_id)
+            if target is not None:
+                self.graph.add_edge(target, argument.operation_id)

        self.is_loaded_subs = False
        self.substitutions: dict[int, list[Substitution]] = {}
@ -785,18 +791,12 @@ class OssCache:
            schema.cache.ensure_loaded()
            self._insert_new(schema)

-    def insert_operation(self, operation: Operation) -> None:
-        ''' Insert new operation. '''
-        self.operations.append(operation)
-        self.operation_by_id[operation.pk] = operation
-        self.graph.add_node(operation.pk)
-        if self.is_loaded_subs:
-            self.substitutions[operation.pk] = []
-            self.inheritance[operation.pk] = []
-
    def insert_argument(self, argument: Argument) -> None:
        ''' Insert new argument. '''
        self.graph.add_edge(argument.argument_id, argument.operation_id)
+        target = self.reference_target.get(argument.argument_id)
+        if target is not None:
+            self.graph.add_edge(target, argument.operation_id)

    def insert_inheritance(self, inheritance: Inheritance) -> None:
        ''' Insert new inheritance. '''
@ -832,6 +832,8 @@ class OssCache:
            del self._schema_by_id[target.result_id]
        self.operations.remove(self.operation_by_id[operation])
        del self.operation_by_id[operation]
+        if operation in self.reference_target:
+            del self.reference_target[operation]
        if self.is_loaded_subs:
            del self.substitutions[operation]
            del self.inheritance[operation]
@ -839,6 +841,10 @@ class OssCache:
    def remove_argument(self, argument: Argument) -> None:
        ''' Remove argument from cache. '''
        self.graph.remove_edge(argument.argument_id, argument.operation_id)
+        target = self.reference_target.get(argument.argument_id)
+        if target is not None:
+            if not Argument.objects.filter(argument_id=target, operation_id=argument.operation_id).exists():
+                self.graph.remove_edge(target, argument.operation_id)

    def remove_substitution(self, target: Substitution) -> None:
        ''' Remove substitution from cache. '''
--- a/rsconcept/backend/apps/oss/serializers/init.py
+++ b/rsconcept/backend/apps/oss/serializers/init.py
@ -16,6 +16,7 @@ from .data_access import (
    MoveItemsSerializer,
    OperationSchemaSerializer,
    OperationSerializer,
+    ReferenceSerializer,
    RelocateConstituentsSerializer,
    SetOperationInputSerializer,
    TargetOperationSerializer,
--- a/rsconcept/backend/apps/oss/serializers/data_access.py
+++ b/rsconcept/backend/apps/oss/serializers/data_access.py
@ -13,7 +13,16 @@ from apps.rsform.serializers import SubstitutionSerializerBase
 from shared import messages as msg
 from shared.serializers import StrictModelSerializer, StrictSerializer

-from ..models import Argument, Block, Inheritance, Layout, Operation, OperationType, Substitution
+from ..models import (
+    Argument,
+    Block,
+    Inheritance,
+    Layout,
+    Operation,
+    OperationType,
+    Reference,
+    Substitution
+)
 from .basics import NodeSerializer, PositionSerializer, SubstitutionExSerializer


@ -45,6 +54,14 @@ class ArgumentSerializer(StrictModelSerializer):
        fields = ('operation', 'argument')


+class ReferenceSerializer(StrictModelSerializer):
+    ''' Serializer: Reference data. '''
+    class Meta:
+        ''' serializer metadata. '''
+        model = Reference
+        fields = ('reference', 'target')
+
+
 class CreateBlockSerializer(StrictSerializer):
    ''' Serializer: Block creation. '''
    class BlockCreateData(StrictModelSerializer):
@ -444,6 +461,7 @@ class DeleteReferenceSerializer(StrictSerializer):
    )
    target = PKField(many=False, queryset=Operation.objects.all().only('oss_id', 'operation_type'))
    keep_connections = serializers.BooleanField(default=False, required=False)
+    keep_constituents = serializers.BooleanField(default=False, required=False)

    def validate(self, attrs):
        oss = cast(LibraryItem, self.context['oss'])
@ -517,6 +535,9 @@ class OperationSchemaSerializer(StrictModelSerializer):
    substitutions = serializers.ListField(
        child=SubstitutionExSerializer()
    )
+    references = serializers.ListField(
+        child=ReferenceSerializer()
+    )
    layout = serializers.ListField(
        child=NodeSerializer()
    )
@ -534,6 +555,7 @@ class OperationSchemaSerializer(StrictModelSerializer):
        result['blocks'] = []
        result['arguments'] = []
        result['substitutions'] = []
+        result['references'] = []
        for operation in Operation.objects.filter(oss=instance).order_by('pk'):
            operation_data = OperationSerializer(operation).data
            operation_result = operation.result
@ -556,6 +578,9 @@ class OperationSchemaSerializer(StrictModelSerializer):
            substitution_term=F('substitution__term_resolved'),
        ).order_by('pk'):
            result['substitutions'].append(substitution)
+        for reference in Reference.objects.filter(target__oss=instance).order_by('pk'):
+            result['references'].append(ReferenceSerializer(reference).data)
+
        return result


--- a/rsconcept/backend/apps/oss/tests/s_models/init.py
+++ b/rsconcept/backend/apps/oss/tests/s_models/init.py
@ -1,5 +1,7 @@
 ''' Tests for Django Models. '''
 from .t_Argument import *
 from .t_Inheritance import *
+from .t_Layout import *
 from .t_Operation import *
+from .t_Reference import *
 from .t_Substitution import *
--- a/rsconcept/backend/apps/oss/tests/s_models/t_Layout.py
+++ b/rsconcept/backend/apps/oss/tests/s_models/t_Layout.py
@ -0,0 +1,39 @@
+''' Testing models: Layout. '''
+from django.test import TestCase
+
+from apps.library.models import LibraryItem
+from apps.oss.models import Layout
+
+
+class TestLayout(TestCase):
+    ''' Testing Layout model. '''
+
+
+    def setUp(self):
+        self.library_item = LibraryItem.objects.create(alias='LIB1')
+        self.layout = Layout.objects.create(
+            oss=self.library_item,
+            data=[{'x': 1, 'y': 2}]
+        )
+
+
+    def test_str(self):
+        expected = f'Схема расположения {self.library_item.alias}'
+        self.assertEqual(str(self.layout), expected)
+
+
+    def test_update_data(self):
+        new_data = [{'x': 10, 'y': 20}]
+        Layout.update_data(self.library_item.id, new_data)
+        self.layout.refresh_from_db()
+        self.assertEqual(self.layout.data, new_data)
+
+
+    def test_default_data(self):
+        layout2 = Layout.objects.create(oss=self.library_item)
+        self.assertEqual(layout2.data, [])
+
+
+    def test_related_name_layout(self):
+        layouts = self.library_item.layout.all()
+        self.assertIn(self.layout, layouts)
--- a/rsconcept/backend/apps/oss/tests/s_models/t_Reference.py
+++ b/rsconcept/backend/apps/oss/tests/s_models/t_Reference.py
@ -0,0 +1,44 @@
+''' Testing models: Reference. '''
+from django.test import TestCase
+
+from apps.oss.models import Operation, OperationSchema, OperationType, Reference
+from apps.rsform.models import RSForm
+
+
+class TestReference(TestCase):
+    ''' Testing Reference model. '''
+
+
+    def setUp(self):
+        self.oss = OperationSchema.create(alias='T1')
+
+        self.operation1 = Operation.objects.create(
+            oss=self.oss.model,
+            alias='KS1',
+            operation_type=OperationType.INPUT,
+        )
+        self.operation2 = Operation.objects.create(
+            oss=self.oss.model,
+            operation_type=OperationType.REFERENCE,
+        )
+        self.reference = Reference.objects.create(
+            reference=self.operation2,
+            target=self.operation1
+        )
+
+
+    def test_str(self):
+        testStr = f'{self.operation2} -> {self.operation1}'
+        self.assertEqual(str(self.reference), testStr)
+
+
+    def test_cascade_delete_operation(self):
+        self.assertEqual(Reference.objects.count(), 1)
+        self.operation2.delete()
+        self.assertEqual(Reference.objects.count(), 0)
+
+
+    def test_cascade_delete_target(self):
+        self.assertEqual(Reference.objects.count(), 1)
+        self.operation1.delete()
+        self.assertEqual(Reference.objects.count(), 0)
--- a/rsconcept/backend/apps/oss/tests/s_propagation/init.py
+++ b/rsconcept/backend/apps/oss/tests/s_propagation/init.py
@ -2,4 +2,5 @@
 from .t_attributes import *
 from .t_constituents import *
 from .t_operations import *
+from .t_references import *
 from .t_substitutions import *
--- a/rsconcept/backend/apps/oss/tests/s_propagation/t_references.py
+++ b/rsconcept/backend/apps/oss/tests/s_propagation/t_references.py
@ -0,0 +1,146 @@
+''' Testing API: Propagate changes through references in OSS. '''
+
+from apps.oss.models import OperationSchema, OperationType
+from apps.rsform.models import Constituenta, CstType, RSForm
+from shared.EndpointTester import EndpointTester, decl_endpoint
+
+
+class ReferencePropagationTestCase(EndpointTester):
+    ''' Test propagation through references in OSS. '''
+
+    def setUp(self):
+        super().setUp()
+
+        self.owned = OperationSchema.create(
+            title='Test',
+            alias='T1',
+            owner=self.user
+        )
+        self.owned_id = self.owned.model.pk
+
+        self.ks1 = RSForm.create(
+            alias='KS1',
+            title='Test1',
+            owner=self.user
+        )
+        self.ks1X1 = self.ks1.insert_last('X1', convention='KS1X1')
+        self.ks1X2 = self.ks1.insert_last('X2', convention='KS1X2')
+        self.ks1D1 = self.ks1.insert_last('D1', definition_formal='X1 X2', convention='KS1D1')
+
+        self.ks2 = RSForm.create(
+            alias='KS2',
+            title='Test2',
+            owner=self.user
+        )
+        self.ks2X1 = self.ks2.insert_last('X1', convention='KS2X1')
+        self.ks2X2 = self.ks2.insert_last('X2', convention='KS2X2')
+        self.ks2S1 = self.ks2.insert_last(
+            alias='S1',
+            definition_formal=r'ℬ(X1)',
+            convention='KS2S1'
+        )
+
+        self.operation1 = self.owned.create_operation(
+            alias='1',
+            operation_type=OperationType.INPUT,
+            result=self.ks1.model
+        )
+        self.operation2 = self.owned.create_operation(
+            alias='2',
+            operation_type=OperationType.INPUT,
+            result=self.ks2.model
+        )
+        self.operation3 = self.owned.create_reference(self.operation1)
+
+        self.operation4 = self.owned.create_operation(
+            alias='4',
+            operation_type=OperationType.SYNTHESIS
+        )
+        self.owned.set_arguments(self.operation4.pk, [self.operation1, self.operation2])
+        self.owned.set_substitutions(self.operation4.pk, [{
+            'original': self.ks1X1,
+            'substitution': self.ks2S1
+        }])
+        self.owned.execute_operation(self.operation4)
+        self.operation4.refresh_from_db()
+        self.ks4 = RSForm(self.operation4.result)
+        self.ks4X1 = Constituenta.objects.get(as_child__parent_id=self.ks1X2.pk)
+        self.ks4S1 = Constituenta.objects.get(as_child__parent_id=self.ks2S1.pk)
+        self.ks4D1 = Constituenta.objects.get(as_child__parent_id=self.ks1D1.pk)
+        self.ks4D2 = self.ks4.insert_last(
+            alias='D2',
+            definition_formal=r'X1 X2 X3 S1 D1',
+            convention='KS4D2'
+        )
+
+        self.operation5 = self.owned.create_operation(
+            alias='5',
+            operation_type=OperationType.SYNTHESIS
+        )
+        self.owned.set_arguments(self.operation5.pk, [self.operation4, self.operation3])
+        self.owned.set_substitutions(self.operation5.pk, [{
+            'original': self.ks4X1,
+            'substitution': self.ks1X2
+        }])
+        self.owned.execute_operation(self.operation5)
+        self.operation5.refresh_from_db()
+        self.ks5 = RSForm(self.operation5.result)
+        self.ks5D4 = self.ks5.insert_last(
+            alias='D4',
+            definition_formal=r'X1 X2 X3 X4 S1 D1 D2 D3',
+            convention='KS5D4'
+        )
+
+        self.operation6 = self.owned.create_operation(
+            alias='6',
+            operation_type=OperationType.SYNTHESIS
+        )
+        self.owned.set_arguments(self.operation6.pk, [self.operation2, self.operation3])
+        self.owned.set_substitutions(self.operation6.pk, [{
+            'original': self.ks2X1,
+            'substitution': self.ks1X1
+        }])
+        self.owned.execute_operation(self.operation6)
+        self.operation6.refresh_from_db()
+        self.ks6 = RSForm(self.operation6.result)
+        self.ks6D2 = self.ks6.insert_last(
+            alias='D2',
+            definition_formal=r'X1 X2 X3 S1 D1',
+            convention='KS6D2'
+        )
+
+        self.layout_data = [
+            {'nodeID': 'o' + str(self.operation1.pk), 'x': 0, 'y': 0, 'width': 150, 'height': 40},
+            {'nodeID': 'o' + str(self.operation2.pk), 'x': 0, 'y': 0, 'width': 150, 'height': 40},
+            {'nodeID': 'o' + str(self.operation3.pk), 'x': 0, 'y': 0, 'width': 150, 'height': 40},
+            {'nodeID': 'o' + str(self.operation4.pk), 'x': 0, 'y': 0, 'width': 150, 'height': 40},
+            {'nodeID': 'o' + str(self.operation5.pk), 'x': 0, 'y': 0, 'width': 150, 'height': 40},
+            {'nodeID': 'o' + str(self.operation6.pk), 'x': 0, 'y': 0, 'width': 150, 'height': 40},
+        ]
+        layout = OperationSchema.layoutQ(self.owned_id)
+        layout.data = self.layout_data
+        layout.save()
+
+
+    def test_reference_creation(self):
+        ''' Test reference creation. '''
+        self.assertEqual(self.operation1.result, self.operation3.result)
+        self.assertEqual(self.ks1.constituentsQ().count(), 3)
+        self.assertEqual(self.ks2.constituentsQ().count(), 3)
+        self.assertEqual(self.ks4.constituentsQ().count(), 6)
+        self.assertEqual(self.ks5.constituentsQ().count(), 9)
+        self.assertEqual(self.ks6.constituentsQ().count(), 6)
+
+
+    @decl_endpoint('/api/oss/{item}/delete-operation', method='patch')
+    def test_delete_target_propagation(self):
+        ''' Test propagation when deleting a target operation. '''
+        data = {
+            'layout': self.layout_data,
+            'target': self.operation1.pk
+        }
+        self.executeOK(data=data, item=self.owned_id)
+        self.assertEqual(self.ks6.constituentsQ().count(), 4)
+       # self.assertEqual(self.ks5.constituentsQ().count(), 5)
+
+# TODO: add more tests
--- a/rsconcept/backend/apps/oss/views/oss.py
+++ b/rsconcept/backend/apps/oss/views/oss.py
@ -683,7 +683,7 @@ class OssViewSet(viewsets.GenericViewSet, generics.ListAPIView, generics.Retriev
        with transaction.atomic():
            oss = m.OperationSchemaCached(item)
            m.Layout.update_data(pk, layout)
-            oss.delete_reference(operation, serializer.validated_data['keep_connections'])
+            oss.delete_reference(operation.pk, serializer.validated_data['keep_connections'])
            item.save(update_fields=['time_update'])

        return Response(
--- a/rsconcept/frontend/src/app/global-dialogs.tsx
+++ b/rsconcept/frontend/src/app/global-dialogs.tsx
@ -45,6 +45,11 @@ const DlgDeleteOperation = React.lazy(() =>
    default: module.DlgDeleteOperation
  }))
 );
+const DlgDeleteReference = React.lazy(() =>
+  import('@/features/oss/dialogs/dlg-delete-reference').then(module => ({
+    default: module.DlgDeleteReference
+  }))
+);
 const DlgEditEditors = React.lazy(() =>
  import('@/features/library/dialogs/dlg-edit-editors').then(module => ({
    default: module.DlgEditEditors
@ -196,6 +201,8 @@ export const GlobalDialogs = () => {
      return <DlgCreateVersion />;
    case DialogType.DELETE_OPERATION:
      return <DlgDeleteOperation />;
+    case DialogType.DELETE_REFERENCE:
+      return <DlgDeleteReference />;
    case DialogType.GRAPH_PARAMETERS:
      return <DlgGraphParams />;
    case DialogType.RELOCATE_CONSTITUENTS:
--- a/rsconcept/frontend/src/components/icons.tsx
+++ b/rsconcept/frontend/src/components/icons.tsx
@ -95,6 +95,8 @@ export { TbHexagonLetterD as IconCstTerm }        from 'react-icons/tb';
 export { TbHexagonLetterF as IconCstFunction }    from 'react-icons/tb';
 export { TbHexagonLetterP as IconCstPredicate }   from 'react-icons/tb';
 export { TbHexagonLetterT as IconCstTheorem }     from 'react-icons/tb';
+export { PiArrowsMergeFill as IconSynthesis }     from 'react-icons/pi';
+export { VscReferences    as IconReference }      from 'react-icons/vsc';
 export { LuNewspaper      as IconDefinition }     from 'react-icons/lu';
 export { LuDna            as IconTerminology }    from 'react-icons/lu';
 export { FaRegHandshake   as IconConvention }     from 'react-icons/fa6';
@ -129,7 +131,6 @@ export { BiStopCircle     as IconStatusIncalculable } from 'react-icons/bi';
 export { BiPauseCircle    as IconStatusProperty } from 'react-icons/bi';
 export { LuPower          as IconKeepAliasOn }    from 'react-icons/lu';
 export { LuPowerOff       as IconKeepAliasOff }   from 'react-icons/lu';
-export { VscReferences    as IconPhantom }        from 'react-icons/vsc';

 // ===== Domain actions =====
 export { BiUpvote         as IconMoveUp }         from 'react-icons/bi';
@ -144,7 +145,6 @@ export { BiDuplicate      as IconClone }          from 'react-icons/bi';
 export { LuReplace        as IconReplace }        from 'react-icons/lu';
 export { FaSortAmountDownAlt as IconSortList }    from 'react-icons/fa';
 export { LuNetwork        as IconGenerateStructure } from 'react-icons/lu';
-export { LuCombine        as IconSynthesis }      from 'react-icons/lu';
 export { LuBookCopy       as IconInlineSynthesis } from 'react-icons/lu';
 export { LuWandSparkles   as IconGenerateNames }  from 'react-icons/lu';
 export { GrConnect        as IconConnect }        from 'react-icons/gr';
--- a/rsconcept/frontend/src/features/oss/backend/api.ts
+++ b/rsconcept/frontend/src/features/oss/backend/api.ts
@ -9,10 +9,12 @@ import {
  type ICloneSchemaDTO,
  type IConstituentaReference,
  type ICreateBlockDTO,
+  type ICreateReferenceDTO,
  type ICreateSchemaDTO,
  type ICreateSynthesisDTO,
  type IDeleteBlockDTO,
  type IDeleteOperationDTO,
+  type IDeleteReferenceDTO,
  type IImportSchemaDTO,
  type IInputCreatedResponse,
  type IMoveItemsDTO,
@ -87,6 +89,28 @@ export const ossApi = {
      }
    }),

+  createReference: ({ itemID, data }: { itemID: number; data: ICreateReferenceDTO }) =>
+    axiosPost<ICreateReferenceDTO, IOperationCreatedResponse>({
+      schema: schemaOperationCreatedResponse,
+      endpoint: `/api/oss/${itemID}/create-reference`,
+      request: {
+        data: data,
+        successMessage: response => {
+          const alias = response.oss.operations.find(op => op.id === response.new_operation)?.alias;
+          return infoMsg.newOperation(alias ?? 'ОШИБКА');
+        }
+      }
+    }),
+  deleteReference: ({ itemID, data }: { itemID: number; data: IDeleteReferenceDTO }) =>
+    axiosPatch<IDeleteReferenceDTO, IOperationSchemaDTO>({
+      schema: schemaOperationSchema,
+      endpoint: `/api/oss/${itemID}/delete-reference`,
+      request: {
+        data: data,
+        successMessage: infoMsg.operationDestroyed
+      }
+    }),
+
  createSchema: ({ itemID, data }: { itemID: number; data: ICreateSchemaDTO }) =>
    axiosPost<ICreateSchemaDTO, IOperationCreatedResponse>({
      schema: schemaOperationCreatedResponse,
--- a/rsconcept/frontend/src/features/oss/backend/oss-loader.ts
+++ b/rsconcept/frontend/src/features/oss/backend/oss-loader.ts
@ -27,9 +27,10 @@ export class OssLoader {
  private itemByNodeID = new Map<string, IOssItem>();
  private blockByID = new Map<number, IBlock>();
  private schemaIDs: number[] = [];
+  private extendedGraph = new Graph();

  constructor(input: RO<IOperationSchemaDTO>) {
-    this.oss = structuredClone(input) as IOperationSchema;
+    this.oss = structuredClone(input) as unknown as IOperationSchema;
  }

  produceOSS(): IOperationSchema {
@ -47,6 +48,7 @@ export class OssLoader {
    result.hierarchy = this.hierarchy;
    result.schemas = this.schemaIDs;
    result.stats = this.calculateStats();
+    result.extendedGraph = this.extendedGraph;
    return result;
  }

@ -57,6 +59,7 @@ export class OssLoader {
      this.itemByNodeID.set(operation.nodeID, operation);
      this.operationByID.set(operation.id, operation);
      this.graph.addNode(operation.id);
+      this.extendedGraph.addNode(operation.id);
      this.hierarchy.addNode(operation.nodeID);
      if (operation.parent) {
        this.hierarchy.addEdge(constructNodeID(NodeType.BLOCK, operation.parent), operation.nodeID);
@ -75,7 +78,13 @@ export class OssLoader {
  }

  private createGraph() {
-    this.oss.arguments.forEach(argument => this.graph.addEdge(argument.argument, argument.operation));
+    this.oss.arguments.forEach(argument => {
+      this.graph.addEdge(argument.argument, argument.operation);
+      this.extendedGraph.addEdge(argument.argument, argument.operation);
+    });
+    this.oss.references.forEach(reference => {
+      this.extendedGraph.addEdge(reference.target, reference.reference);
+    });
  }

  private extractSchemas() {
@ -83,16 +92,37 @@ export class OssLoader {
  }

  private inferOperationAttributes() {
+    const referenceCounts = new Map<number, number>();
+
    this.graph.topologicalOrder().forEach(operationID => {
      const operation = this.operationByID.get(operationID)!;
      const position = this.oss.layout.find(item => item.nodeID === operation.nodeID);
      operation.x = position?.x ?? 0;
      operation.y = position?.y ?? 0;
-      operation.is_consolidation = this.inferConsolidation(operationID);
-      operation.substitutions = this.oss.substitutions.filter(item => item.operation === operationID);
-      operation.arguments = this.oss.arguments
-        .filter(item => item.operation === operationID)
-        .map(item => item.argument);
+      switch (operation.operation_type) {
+        case OperationType.INPUT:
+          break;
+        case OperationType.SYNTHESIS:
+          operation.is_consolidation = this.inferConsolidation(operationID);
+          operation.substitutions = this.oss.substitutions.filter(item => item.operation === operationID);
+          operation.arguments = this.oss.arguments
+            .filter(item => item.operation === operationID)
+            .map(item => item.argument);
+          break;
+        case OperationType.REFERENCE:
+          const ref = this.oss.references.find(item => item.reference === operationID);
+          const target = !!ref ? this.operationByID.get(ref.target) : null;
+          if (!target || !ref) {
+            throw new Error(`Reference ${operationID} not found`);
+          }
+          const refCount = (referenceCounts.get(target.id) ?? 0) + 1;
+          referenceCounts.set(target.id, refCount);
+          operation.target = ref.target;
+          operation.alias = `[${refCount}] ${target.alias}`;
+          operation.title = target.title;
+          operation.description = target.description;
+          break;
+      }
    });
  }

@ -107,13 +137,13 @@ export class OssLoader {
  }

  private inferConsolidation(operationID: number): boolean {
-    const inputs = this.graph.expandInputs([operationID]);
+    const inputs = this.extendedGraph.expandInputs([operationID]);
    if (inputs.length === 0) {
      return false;
    }
    const ancestors = [...inputs];
    inputs.forEach(input => {
-      ancestors.push(...this.graph.expandAllInputs([input]));
+      ancestors.push(...this.extendedGraph.expandAllInputs([input]));
    });
    const unique = new Set(ancestors);
    return unique.size < ancestors.length;
@ -126,8 +156,11 @@ export class OssLoader {
      count_inputs: operations.filter(item => item.operation_type === OperationType.INPUT).length,
      count_synthesis: operations.filter(item => item.operation_type === OperationType.SYNTHESIS).length,
      count_schemas: this.schemaIDs.length,
-      count_owned: operations.filter(item => !!item.result && !item.is_import).length,
-      count_block: this.oss.blocks.length
+      count_owned: operations.filter(
+        item => !!item.result && (item.operation_type !== OperationType.INPUT || !item.is_import)
+      ).length,
+      count_block: this.oss.blocks.length,
+      count_references: this.oss.references.length
    };
  }
 }
--- a/rsconcept/frontend/src/features/oss/backend/types.ts
+++ b/rsconcept/frontend/src/features/oss/backend/types.ts
@ -9,7 +9,8 @@ import { errorMsg } from '@/utils/labels';
 /** Represents {@link IOperation} type. */
 export const OperationType = {
  INPUT: 'input',
-  SYNTHESIS: 'synthesis'
+  SYNTHESIS: 'synthesis',
+  REFERENCE: 'reference'
 } as const;
 export type OperationType = (typeof OperationType)[keyof typeof OperationType];

@ -48,6 +49,7 @@ export type IMoveItemsDTO = z.infer<typeof schemaMoveItems>;

 /** Represents {@link IOperation} data, used in Create action. */
 export type ICreateSchemaDTO = z.infer<typeof schemaCreateSchema>;
+export type ICreateReferenceDTO = z.infer<typeof schemaCreateReference>;
 export type ICreateSynthesisDTO = z.infer<typeof schemaCreateSynthesis>;
 export type IImportSchemaDTO = z.infer<typeof schemaImportSchema>;
 export type ICloneSchemaDTO = z.infer<typeof schemaCloneSchema>;
@ -61,6 +63,9 @@ export type IUpdateOperationDTO = z.infer<typeof schemaUpdateOperation>;
 /** Represents {@link IOperation} data, used in Delete action. */
 export type IDeleteOperationDTO = z.infer<typeof schemaDeleteOperation>;

+/** Represents {@link IOperation} reference type data, used in Delete action. */
+export type IDeleteReferenceDTO = z.infer<typeof schemaDeleteReference>;
+
 /** Represents target {@link IOperation}. */
 export interface ITargetOperation {
  layout: IOssLayout;
@ -119,6 +124,11 @@ export const schemaBlock = z.strictObject({
  parent: z.number().nullable()
 });

+const schemaReference = z.strictObject({
+  target: z.number(),
+  reference: z.number()
+});
+
 export const schemaPosition = z.strictObject({
  x: z.number(),
  y: z.number(),
@ -148,6 +158,7 @@ export const schemaOperationSchema = schemaLibraryItem.extend({
  editors: z.number().array(),
  operations: z.array(schemaOperation),
  blocks: z.array(schemaBlock),
+  references: z.array(schemaReference),
  layout: schemaOssLayout,
  arguments: z
    .object({
@ -188,6 +199,12 @@ export const schemaCreateSchema = z.strictObject({
  position: schemaPosition
 });

+export const schemaCreateReference = z.strictObject({
+  target: z.number(),
+  layout: schemaOssLayout,
+  position: schemaPosition
+});
+
 export const schemaCloneSchema = z.strictObject({
  layout: schemaOssLayout,
  source_operation: z.number(),
@ -230,6 +247,13 @@ export const schemaDeleteOperation = z.strictObject({
  delete_schema: z.boolean()
 });

+export const schemaDeleteReference = z.strictObject({
+  target: z.number(),
+  layout: schemaOssLayout,
+  keep_constituents: z.boolean(),
+  keep_connections: z.boolean()
+});
+
 export const schemaMoveItems = z.strictObject({
  layout: schemaOssLayout,
  operations: z.array(z.number()),
--- a/rsconcept/frontend/src/features/oss/backend/use-create-reference.ts
+++ b/rsconcept/frontend/src/features/oss/backend/use-create-reference.ts
@ -0,0 +1,25 @@
+import { useMutation, useQueryClient } from '@tanstack/react-query';
+
+import { useUpdateTimestamp } from '@/features/library/backend/use-update-timestamp';
+
+import { KEYS } from '@/backend/configuration';
+
+import { ossApi } from './api';
+import { type ICreateReferenceDTO } from './types';
+
+export const useCreateReference = () => {
+  const client = useQueryClient();
+  const { updateTimestamp } = useUpdateTimestamp();
+  const mutation = useMutation({
+    mutationKey: [KEYS.global_mutation, ossApi.baseKey, 'create-reference'],
+    mutationFn: ossApi.createReference,
+    onSuccess: data => {
+      updateTimestamp(data.oss.id, data.oss.time_update);
+      client.setQueryData(ossApi.getOssQueryOptions({ itemID: data.oss.id }).queryKey, data.oss);
+    },
+    onError: () => client.invalidateQueries()
+  });
+  return {
+    createReference: (data: { itemID: number; data: ICreateReferenceDTO }) => mutation.mutateAsync(data)
+  };
+};
--- a/rsconcept/frontend/src/features/oss/backend/use-delete-reference.ts
+++ b/rsconcept/frontend/src/features/oss/backend/use-delete-reference.ts
@ -0,0 +1,29 @@
+import { useMutation, useQueryClient } from '@tanstack/react-query';
+
+import { useUpdateTimestamp } from '@/features/library/backend/use-update-timestamp';
+
+import { KEYS } from '@/backend/configuration';
+
+import { ossApi } from './api';
+import { type IDeleteReferenceDTO } from './types';
+
+export const useDeleteReference = () => {
+  const client = useQueryClient();
+  const { updateTimestamp } = useUpdateTimestamp();
+  const mutation = useMutation({
+    mutationKey: [KEYS.global_mutation, ossApi.baseKey, 'delete-reference'],
+    mutationFn: ossApi.deleteReference,
+    onSuccess: async data => {
+      updateTimestamp(data.id, data.time_update);
+      client.setQueryData(ossApi.getOssQueryOptions({ itemID: data.id }).queryKey, data);
+      await Promise.allSettled([
+        client.invalidateQueries({ queryKey: KEYS.composite.libraryList }),
+        client.invalidateQueries({ queryKey: [KEYS.rsform] })
+      ]);
+    },
+    onError: () => client.invalidateQueries()
+  });
+  return {
+    deleteReference: (data: { itemID: number; data: IDeleteReferenceDTO }) => mutation.mutateAsync(data)
+  };
+};
--- a/rsconcept/frontend/src/features/oss/components/info-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/components/info-operation.tsx
@ -47,12 +47,12 @@ export function InfoOperation({ operation }: InfoOperationProps) {
      <p>
        <b>Тип:</b> {labelOperationType(operation.operation_type)}
      </p>
-      {operation.is_import ? (
+      {operation.operation_type === OperationType.INPUT && operation.is_import ? (
        <p>
          <b>КС не принадлежит ОСС</b>
        </p>
      ) : null}
-      {operation.is_consolidation ? (
+      {operation.operation_type === OperationType.SYNTHESIS && operation.is_consolidation ? (
        <p>
          <b>Ромбовидный синтез</b>
        </p>
@ -69,7 +69,7 @@ export function InfoOperation({ operation }: InfoOperationProps) {
          {operation.description}
        </p>
      ) : null}
-      {operation.substitutions.length > 0 ? (
+      {operation.operation_type === OperationType.SYNTHESIS && operation.substitutions.length > 0 ? (
        <DataTable
          dense
          noHeader
--- a/rsconcept/frontend/src/features/oss/components/oss-stats.tsx
+++ b/rsconcept/frontend/src/features/oss/components/oss-stats.tsx
@ -1,6 +1,7 @@
 import {
  IconConceptBlock,
  IconDownload,
+  IconReference,
  IconRSForm,
  IconRSFormImported,
  IconRSFormOwned,
@ -18,14 +19,16 @@ interface OssStatsProps {

 export function OssStats({ className, stats }: OssStatsProps) {
  return (
-    <aside className={cn('grid grid-cols-4 gap-1 justify-items-end h-min select-none', className)}>
+    <aside className={cn('grid grid-cols-3 gap-1 justify-items-end h-min select-none', className)}>
      <div id='count_operations' className='w-fit flex gap-3 hover:cursor-default '>
        <span>Всего</span>
        <span>{stats.count_all}</span>
      </div>
      <ValueStats id='count_block' title='Блоки' icon={<IconConceptBlock size='1.25rem' />} value={stats.count_block} />
+
      <ValueStats
        id='count_inputs'
+        className='col-start-1'
        title='Загрузка'
        icon={<IconDownload size='1.25rem' />}
        value={stats.count_inputs}
@ -36,6 +39,12 @@ export function OssStats({ className, stats }: OssStatsProps) {
        icon={<IconSynthesis size='1.25rem' />}
        value={stats.count_synthesis}
      />
+      <ValueStats
+        id='count_references'
+        title='Синтез'
+        icon={<IconReference size='1.25rem' />}
+        value={stats.count_references}
+      />

      <ValueStats
        id='count_schemas'
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-arguments.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-arguments.tsx
@ -18,6 +18,9 @@ export function TabArguments() {
  } = useFormContext<ICreateSynthesisDTO>();
  const inputs = useWatch({ control, name: 'arguments' });

+  const references = manager.oss.references.filter(item => inputs.includes(item.target)).map(item => item.reference);
+  const filtered = manager.oss.operations.filter(item => !references.includes(item.id));
+
  return (
    <div className='cc-fade-in cc-column'>
      <TextInput
@ -64,7 +67,7 @@ export function TabArguments() {
          name='arguments'
          control={control}
          render={({ field }) => (
-            <PickMultiOperation items={manager.oss.operations} value={field.value} onChange={field.onChange} rows={6} />
+            <PickMultiOperation items={filtered} value={field.value} onChange={field.onChange} rows={6} />
          )}
        />
      </div>
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-operation.tsx
@ -9,13 +9,13 @@ import { Checkbox, TextInput } from '@/components/input';
 import { ModalForm } from '@/components/modal';
 import { useDialogsStore } from '@/stores/dialogs';

-import { type IDeleteOperationDTO, type IOssLayout, schemaDeleteOperation } from '../backend/types';
+import { type IDeleteOperationDTO, type IOssLayout, OperationType, schemaDeleteOperation } from '../backend/types';
 import { useDeleteOperation } from '../backend/use-delete-operation';
-import { type IOperation, type IOperationSchema } from '../models/oss';
+import { type IOperationInput, type IOperationSchema, type IOperationSynthesis } from '../models/oss';

 export interface DlgDeleteOperationProps {
  oss: IOperationSchema;
-  target: IOperation;
+  target: IOperationInput | IOperationSynthesis;
  layout: IOssLayout;
 }

@ -54,13 +54,13 @@ export function DlgDeleteOperation() {
          <Checkbox
            label='Удалить схему'
            titleHtml={
-              target.is_import || target.result === null
+              (target.operation_type === OperationType.INPUT && target.is_import) || target.result === null
                ? 'Привязанную схему нельзя удалить'
                : 'Удалить схему вместе с операцией'
            }
            value={field.value}
            onChange={field.onChange}
-            disabled={target.is_import || target.result === null}
+            disabled={(target.operation_type === OperationType.INPUT && target.is_import) || target.result === null}
          />
        )}
      />
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-reference.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-reference.tsx
@ -0,0 +1,79 @@
+'use client';
+
+import { Controller, useForm, useWatch } from 'react-hook-form';
+import { zodResolver } from '@hookform/resolvers/zod';
+
+import { HelpTopic } from '@/features/help';
+
+import { Checkbox, TextInput } from '@/components/input';
+import { ModalForm } from '@/components/modal';
+import { useDialogsStore } from '@/stores/dialogs';
+
+import { type IDeleteReferenceDTO, type IOssLayout, schemaDeleteReference } from '../backend/types';
+import { useDeleteReference } from '../backend/use-delete-reference';
+import { type IOperationReference, type IOperationSchema } from '../models/oss';
+
+export interface DlgDeleteReferenceProps {
+  oss: IOperationSchema;
+  target: IOperationReference;
+  layout: IOssLayout;
+}
+
+export function DlgDeleteReference() {
+  const { oss, target, layout } = useDialogsStore(state => state.props as DlgDeleteReferenceProps);
+  const { deleteReference } = useDeleteReference();
+
+  const { handleSubmit, control } = useForm<IDeleteReferenceDTO>({
+    resolver: zodResolver(schemaDeleteReference),
+    defaultValues: {
+      target: target.id,
+      layout: layout,
+      keep_constituents: false,
+      keep_connections: false
+    }
+  });
+  const keep_connections = useWatch({ control, name: 'keep_connections' });
+
+  function onSubmit(data: IDeleteReferenceDTO) {
+    return deleteReference({ itemID: oss.id, data: data });
+  }
+
+  return (
+    <ModalForm
+      overflowVisible
+      header='Удаление операции'
+      submitText='Подтвердить удаление'
+      onSubmit={event => void handleSubmit(onSubmit)(event)}
+      className='w-140 pb-3 px-6 cc-column select-none'
+      helpTopic={HelpTopic.CC_PROPAGATION}
+    >
+      <TextInput disabled dense noBorder id='operation_alias' label='Операция' value={target.alias} />
+      <Controller
+        control={control}
+        name='keep_connections'
+        render={({ field }) => (
+          <Checkbox
+            label='Переадресовать связи на оригинал'
+            titleHtml='Связи аргументов будут перенаправлены на оригинал ссылки'
+            value={field.value}
+            onChange={field.onChange}
+            disabled={target.result === null}
+          />
+        )}
+      />
+      <Controller
+        control={control}
+        name='keep_constituents'
+        render={({ field }) => (
+          <Checkbox
+            label='Сохранить наследованные конституенты'
+            titleHtml='Наследованные конституенты <br/>превратятся в дописанные'
+            value={field.value}
+            onChange={field.onChange}
+            disabled={target.result === null || keep_connections}
+          />
+        )}
+      />
+    </ModalForm>
+  );
+}
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx
@ -13,7 +13,7 @@ import { useDialogsStore } from '@/stores/dialogs';

 import { type IUpdateOperationDTO, OperationType, schemaUpdateOperation } from '../../backend/types';
 import { useUpdateOperation } from '../../backend/use-update-operation';
-import { type IOperation } from '../../models/oss';
+import { type IOperationInput, type IOperationSynthesis } from '../../models/oss';
 import { type LayoutManager } from '../../models/oss-layout-api';

 import { TabArguments } from './tab-arguments';
@ -22,7 +22,7 @@ import { TabSubstitutions } from './tab-substitutions';

 export interface DlgEditOperationProps {
  manager: LayoutManager;
-  target: IOperation;
+  target: IOperationInput | IOperationSynthesis;
 }

 export const TabID = {
@ -46,11 +46,14 @@ export function DlgEditOperation() {
        description: target.description,
        parent: target.parent
      },
-      arguments: target.arguments,
-      substitutions: target.substitutions.map(sub => ({
-        original: sub.original,
-        substitution: sub.substitution
-      })),
+      arguments: target.operation_type === OperationType.SYNTHESIS ? target.arguments : [],
+      substitutions:
+        target.operation_type === OperationType.SYNTHESIS
+          ? target.substitutions.map(sub => ({
+              original: sub.original,
+              substitution: sub.substitution
+            }))
+          : [],
      layout: manager.layout
    },
    mode: 'onChange'
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-arguments.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-arguments.tsx
@ -1,5 +1,5 @@
 'use client';
-import { Controller, useFormContext } from 'react-hook-form';
+import { Controller, useFormContext, useWatch } from 'react-hook-form';

 import { Label } from '@/components/input';
 import { useDialogsStore } from '@/stores/dialogs';
@ -12,7 +12,12 @@ import { type DlgEditOperationProps } from './dlg-edit-operation';
 export function TabArguments() {
  const { control, setValue } = useFormContext<IUpdateOperationDTO>();
  const { manager, target } = useDialogsStore(state => state.props as DlgEditOperationProps);
-  const potentialCycle = [target.id, ...manager.oss.graph.expandAllOutputs([target.id])];
+  const args = useWatch({ control, name: 'arguments' });
+
+  const references = manager.oss.references
+    .filter(item => args.includes(item.target) || item.target === target.id)
+    .map(item => item.reference);
+  const potentialCycle = [target.id, ...references, ...manager.oss.graph.expandAllOutputs([target.id])];
  const filtered = manager.oss.operations.filter(item => !potentialCycle.includes(item.id));

  function handleChangeArguments(prev: number[], newValue: number[]) {
--- a/rsconcept/frontend/src/features/oss/labels.ts
+++ b/rsconcept/frontend/src/features/oss/labels.ts
@ -11,12 +11,14 @@ import {

 const labelOperationTypeRecord: Record<OperationType, string> = {
  [OperationType.INPUT]: 'Загрузка',
-  [OperationType.SYNTHESIS]: 'Синтез'
+  [OperationType.SYNTHESIS]: 'Синтез',
+  [OperationType.REFERENCE]: 'Ссылка'
 };

 const describeOperationTypeRecord: Record<OperationType, string> = {
  [OperationType.INPUT]: 'Загрузка концептуальной схемы в ОСС',
-  [OperationType.SYNTHESIS]: 'Синтез концептуальных схем'
+  [OperationType.SYNTHESIS]: 'Синтез концептуальных схем',
+  [OperationType.REFERENCE]: 'Создание ссылки на результат операции'
 };

 /** Retrieves label for {@link OperationType}. */
--- a/rsconcept/frontend/src/features/oss/models/oss-layout-api.ts
+++ b/rsconcept/frontend/src/features/oss/models/oss-layout-api.ts
@ -4,7 +4,8 @@ import {
  type ICreateSynthesisDTO,
  type IImportSchemaDTO,
  type INodePosition,
-  type IOssLayout
+  type IOssLayout,
+  OperationType
 } from '../backend/types';

 import { type IOperationSchema, NodeType } from './oss';
@ -258,7 +259,11 @@ export class LayoutManager {
    }

    const freeInputs = this.oss.operations
-      .filter(operation => operation.arguments.length === 0 && operation.parent === null)
+      .filter(
+        operation =>
+          operation.parent === null &&
+          (operation.operation_type !== OperationType.SYNTHESIS || operation.arguments.length === 0)
+      )
      .map(operation => operation.nodeID);
    let inputsPositions = this.layout.filter(pos => freeInputs.includes(pos.nodeID));
    if (inputsPositions.length === 0) {
--- a/rsconcept/frontend/src/features/oss/models/oss.ts
+++ b/rsconcept/frontend/src/features/oss/models/oss.ts
@ -8,7 +8,8 @@ import {
  type IBlockDTO,
  type ICstSubstituteInfo,
  type IOperationDTO,
-  type IOperationSchemaDTO
+  type IOperationSchemaDTO,
+  type OperationType
 } from '../backend/types';

 /** Represents OSS node type. */
@ -18,26 +19,50 @@ export const NodeType = {
 } as const;
 export type NodeType = (typeof NodeType)[keyof typeof NodeType];

-/** Represents Operation. */
-export interface IOperation extends IOperationDTO {
+/** Represents OSS graph node. */
+export interface IOssNode {
  nodeID: string;
-  nodeType: typeof NodeType.OPERATION;
+  nodeType: NodeType;
+  parent: number | null;
  x: number;
  y: number;
+  width: number;
+  height: number;
+}
+
+/** Represents Operation common attributes. */
+export interface IOperationBase
+  extends IOssNode,
+    Pick<IOperationDTO, 'alias' | 'title' | 'description' | 'id' | 'operation_type' | 'result'> {
+  nodeType: typeof NodeType.OPERATION;
+}
+
+/** Represents Input Operation. */
+export interface IOperationInput extends IOperationBase {
+  operation_type: typeof OperationType.INPUT;
  is_import: boolean;
+}
+
+/** Represents Reference Operation. */
+export interface IOperationReference extends IOperationBase {
+  operation_type: typeof OperationType.REFERENCE;
+  target: number;
+}
+
+/** Represents Synthesis Operation. */
+export interface IOperationSynthesis extends IOperationBase {
+  operation_type: typeof OperationType.SYNTHESIS;
  is_consolidation: boolean; // aka 'diamond synthesis'
  substitutions: ICstSubstituteInfo[];
  arguments: number[];
 }

+/** Represents Operation. */
+export type IOperation = IOperationInput | IOperationReference | IOperationSynthesis;
+
 /** Represents Block. */
-export interface IBlock extends IBlockDTO {
-  nodeID: string;
+export interface IBlock extends IOssNode, IBlockDTO {
  nodeType: typeof NodeType.BLOCK;
-  x: number;
-  y: number;
-  width: number;
-  height: number;
 }

 /** Represents item of OperationSchema. */
@ -51,14 +76,16 @@ export interface IOperationSchemaStats {
  count_schemas: number;
  count_owned: number;
  count_block: number;
+  count_references: number;
 }

 /** Represents OperationSchema. */
-export interface IOperationSchema extends IOperationSchemaDTO {
+export interface IOperationSchema extends Omit<IOperationSchemaDTO, 'operations'> {
  operations: IOperation[];
  blocks: IBlock[];

  graph: Graph;
+  extendedGraph: Graph;
  hierarchy: Graph<string>;
  schemas: number[];
  stats: IOperationSchemaStats;
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/context-menu.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/context-menu.tsx
@ -47,10 +47,10 @@ export function ContextMenu({ isOpen, item, cursorX, cursorY, onHide }: ContextM
        margin={cursorY >= window.innerHeight - MENU_HEIGHT ? 'mb-3' : 'mt-3'}
      >
        {!!item ? (
-          item.nodeType === NodeType.OPERATION ? (
-            <MenuOperation operation={item} onHide={onHide} />
-          ) : (
+          item.nodeType === NodeType.BLOCK ? (
            <MenuBlock block={item} onHide={onHide} />
+          ) : (
+            <MenuOperation operation={item} onHide={onHide} />
          )
        ) : null}
      </Dropdown>
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-operation.tsx
@ -3,6 +3,7 @@ import { toast } from 'react-toastify';

 import { useLibrary } from '@/features/library/backend/use-library';
 import { useCloneSchema } from '@/features/oss/backend/use-clone-schema';
+import { useCreateReference } from '@/features/oss/backend/use-create-reference';

 import { DropdownButton } from '@/components/dropdown';
 import {
@ -13,13 +14,13 @@ import {
  IconEdit2,
  IconExecute,
  IconNewRSForm,
-  IconPhantom,
+  IconReference,
  IconRSForm
 } from '@/components/icons';
 import { useDialogsStore } from '@/stores/dialogs';
 import { PARAMETER } from '@/utils/constants';
 import { errorMsg } from '@/utils/labels';
-import { notImplemented, prepareTooltip } from '@/utils/utils';
+import { prepareTooltip } from '@/utils/utils';

 import { OperationType } from '../../../../backend/types';
 import { useCreateInput } from '../../../../backend/use-create-input';
@ -44,11 +45,13 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
  const { createInput: inputCreate } = useCreateInput();
  const { executeOperation: operationExecute } = useExecuteOperation();
  const { cloneSchema } = useCloneSchema();
+  const { createReference } = useCreateReference();

  const showEditInput = useDialogsStore(state => state.showChangeInputSchema);
  const showRelocateConstituents = useDialogsStore(state => state.showRelocateConstituents);
  const showEditOperation = useDialogsStore(state => state.showEditOperation);
  const showDeleteOperation = useDialogsStore(state => state.showDeleteOperation);
+  const showDeleteReference = useDialogsStore(state => state.showDeleteReference);

  const readyForSynthesis = (() => {
    if (operation?.operation_type !== OperationType.SYNTHESIS) {
@ -92,7 +95,7 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
  }

  function handleEditOperation() {
-    if (!operation) {
+    if (!operation || operation.operation_type === OperationType.REFERENCE) {
      return;
    }
    onHide();
@ -107,11 +110,22 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
      return;
    }
    onHide();
-    showDeleteOperation({
-      oss: schema,
-      target: operation,
-      layout: getLayout()
-    });
+    switch (operation.operation_type) {
+      case OperationType.REFERENCE:
+        showDeleteReference({
+          oss: schema,
+          target: operation,
+          layout: getLayout()
+        });
+        break;
+      case OperationType.INPUT:
+      case OperationType.SYNTHESIS:
+        showDeleteOperation({
+          oss: schema,
+          target: operation,
+          layout: getLayout()
+        });
+    }
  }

  function handleOperationExecute() {
@ -152,9 +166,24 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
    });
  }

-  function handleCreatePhantom() {
+  function handleCreateReference() {
    onHide();
-    notImplemented();
+
+    const layout = getLayout();
+    const manager = new LayoutManager(schema, layout);
+    const newPosition = manager.newClonePosition(operation.nodeID);
+    if (!newPosition) {
+      return;
+    }
+
+    void createReference({
+      itemID: schema.id,
+      data: {
+        target: operation.id,
+        layout: layout,
+        position: newPosition
+      }
+    }).then(response => setTimeout(() => setSelected([`o${response.new_operation}`]), PARAMETER.refreshTimeout));
  }

  function handleClone() {
@ -177,17 +206,34 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
    }).then(response => setTimeout(() => setSelected([`o${response.new_operation}`]), PARAMETER.refreshTimeout));
  }

+  function handleSelectTarget() {
+    onHide();
+    if (operation.operation_type !== OperationType.REFERENCE) {
+      return;
+    }
+    setSelected([`o${operation.target}`]);
+  }
+
  return (
    <>
-      <DropdownButton
-        text='Редактировать'
-        title='Редактировать операцию'
-        icon={<IconEdit2 size='1rem' className='icon-primary' />}
-        onClick={handleEditOperation}
-        disabled={!isMutable || isProcessing}
-      />
+      {operation.operation_type !== OperationType.REFERENCE ? (
+        <DropdownButton
+          text='Редактировать'
+          title='Редактировать операцию'
+          icon={<IconEdit2 size='1rem' className='icon-primary' />}
+          onClick={handleEditOperation}
+          disabled={!isMutable || isProcessing}
+        />
+      ) : (
+        <DropdownButton
+          text='Оригинал'
+          title='Выделить оригинал'
+          icon={<IconReference size='1rem' className='icon-primary' />}
+          onClick={handleSelectTarget}
+        />
+      )}

-      {operation?.result ? (
+      {operation.result ? (
        <DropdownButton
          text='Открыть схему'
          titleHtml={prepareTooltip('Открыть привязанную КС', 'Двойной клик')}
@ -197,7 +243,10 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
          disabled={isProcessing}
        />
      ) : null}
-      {isMutable && !operation?.result && operation?.arguments.length === 0 ? (
+      {isMutable &&
+      !operation.result &&
+      operation.operation_type === OperationType.SYNTHESIS &&
+      operation.arguments.length === 0 ? (
        <DropdownButton
          text='Создать схему'
          title='Создать пустую схему'
@ -215,7 +264,7 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
          disabled={isProcessing}
        />
      ) : null}
-      {isMutable && !operation?.result && operation?.operation_type === OperationType.SYNTHESIS ? (
+      {isMutable && !operation.result && operation.operation_type === OperationType.SYNTHESIS ? (
        <DropdownButton
          text='Активировать синтез'
          titleHtml={
@ -230,7 +279,7 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
        />
      ) : null}

-      {isMutable && operation?.result ? (
+      {isMutable && operation.result && operation.operation_type !== OperationType.REFERENCE ? (
        <DropdownButton
          text='Конституенты'
          titleHtml='Перенос конституент</br>между схемами'
@ -241,17 +290,17 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
        />
      ) : null}

-      {isMutable ? (
+      {isMutable && operation.operation_type !== OperationType.REFERENCE ? (
        <DropdownButton
          text='Создать ссылку'
          title='Создать ссылку на результат операции'
-          icon={<IconPhantom size='1rem' className='icon-green' />}
-          onClick={handleCreatePhantom}
+          icon={<IconReference size='1rem' className='icon-green' />}
+          onClick={handleCreateReference}
          disabled={isProcessing}
        />
      ) : null}

-      {isMutable ? (
+      {isMutable && operation.operation_type !== OperationType.REFERENCE ? (
        <DropdownButton
          text='Клонировать'
          title='Создать и загрузить копию концептуальной схемы'
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/node-core.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/node-core.tsx
@ -22,6 +22,8 @@ interface NodeCoreProps {

 export function NodeCore({ node }: NodeCoreProps) {
  const { selectedItems, schema } = useOssEdit();
+  const opType = node.data.operation.operation_type;
+
  const focus = selectedItems.length === 1 ? selectedItems[0] : null;
  const isChild = (!!focus && schema.hierarchy.at(focus.nodeID)?.outputs.includes(node.data.operation.nodeID)) ?? false;

@ -36,6 +38,7 @@ export function NodeCore({ node }: NodeCoreProps) {
      className={cn(
        'cc-node-operation h-[40px] w-[150px]',
        'relative flex items-center justify-center p-[2px]',
+        opType === OperationType.REFERENCE && 'border-dashed',
        isChild && 'border-accent-orange'
      )}
    >
@ -45,7 +48,7 @@ export function NodeCore({ node }: NodeCoreProps) {
          title={hasFile ? 'Связанная КС' : 'Нет связанной КС'}
          icon={<IconRSForm className={hasFile ? 'text-constructive' : 'text-destructive'} size='12px' />}
        />
-        {node.data.operation.is_consolidation ? (
+        {opType === OperationType.SYNTHESIS && node.data.operation.is_consolidation ? (
          <Indicator
            noPadding
            titleHtml='<b>Внимание!</b><br />Ромбовидный синтез</br/>Возможны дубликаты конституент'
@ -66,11 +69,11 @@ export function NodeCore({ node }: NodeCoreProps) {
        </div>
      ) : null}

-      {node.data.operation.operation_type === OperationType.INPUT ? (
+      {opType === OperationType.INPUT ? (
        <div className='absolute top-[3px] right-1/2 translate-x-1/2 border-t w-[30px]' />
      ) : null}

-      {node.data.operation.is_import ? (
+      {opType === OperationType.INPUT && node.data.operation.is_import ? (
        <div className='absolute left-[3px] top-1/2 -translate-y-1/2 border-r rounded-none bg-input h-[22px]' />
      ) : null}

--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/oss-node-types.ts
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/oss-node-types.ts
@ -2,10 +2,12 @@ import { type NodeTypes } from 'reactflow';

 import { BlockNode } from './block-node';
 import { InputNode } from './input-node';
-import { OperationNode } from './operation-node';
+import { ReferenceNode } from './reference-node';
+import { SynthesisNode } from './synthesis-node';

 export const OssNodeTypes: NodeTypes = {
-  synthesis: OperationNode,
  input: InputNode,
+  synthesis: SynthesisNode,
+  reference: ReferenceNode,
  block: BlockNode
 } as const;
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/reference-node.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/reference-node.tsx
@ -0,0 +1,14 @@
+import { Handle, Position } from 'reactflow';
+
+import { type OperationInternalNode } from '../../../../models/oss-layout';
+
+import { NodeCore } from './node-core';
+
+export function ReferenceNode(node: OperationInternalNode) {
+  return (
+    <>
+      <NodeCore node={node} />
+      <Handle type='source' position={Position.Bottom} className='-translate-y-[1px]' />
+    </>
+  );
+}
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/synthesis-node.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/synthesis-node.tsx
@ -6,7 +6,7 @@ import { type OperationInternalNode } from '../../../../models/oss-layout';

 import { NodeCore } from './node-core';

-export function OperationNode(node: OperationInternalNode) {
+export function SynthesisNode(node: OperationInternalNode) {
  return (
    <>
      <Handle type='target' position={Position.Top} id='left' style={{ left: 40, top: -2 }} />
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
@ -11,6 +11,7 @@ import { PARAMETER } from '@/utils/constants';
 import { promptText } from '@/utils/labels';
 import { withPreventDefault } from '@/utils/utils';

+import { OperationType } from '../../../backend/types';
 import { useDeleteBlock } from '../../../backend/use-delete-block';
 import { useMutatingOss } from '../../../backend/use-mutating-oss';
 import { useUpdateLayout } from '../../../backend/use-update-layout';
@ -68,6 +69,7 @@ export function OssFlow() {
  const showCreateBlock = useDialogsStore(state => state.showCreateBlock);
  const showCreateSchema = useDialogsStore(state => state.showCreateSchema);
  const showDeleteOperation = useDialogsStore(state => state.showDeleteOperation);
+  const showDeleteReference = useDialogsStore(state => state.showDeleteReference);
  const showEditBlock = useDialogsStore(state => state.showEditBlock);
  const showImportSchema = useDialogsStore(state => state.showImportSchema);

@ -150,11 +152,22 @@ export function OssFlow() {
      if (!canDeleteOperation(item)) {
        return;
      }
-      showDeleteOperation({
-        oss: schema,
-        target: item,
-        layout: getLayout()
-      });
+      switch (item.operation_type) {
+        case OperationType.REFERENCE:
+          showDeleteReference({
+            oss: schema,
+            target: item,
+            layout: getLayout()
+          });
+          break;
+        case OperationType.INPUT:
+        case OperationType.SYNTHESIS:
+          showDeleteOperation({
+            oss: schema,
+            target: item,
+            layout: getLayout()
+          });
+      }
    } else {
      if (!window.confirm(promptText.deleteBlock)) {
        return;
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/side-panel/block-stats.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/side-panel/block-stats.tsx
@ -16,8 +16,11 @@ export function BlockStats({ target, oss }: BlockStatsProps) {
    count_inputs: operations.filter(item => item.operation_type === OperationType.INPUT).length,
    count_synthesis: operations.filter(item => item.operation_type === OperationType.SYNTHESIS).length,
    count_schemas: operations.filter(item => !!item.result).length,
-    count_owned: operations.filter(item => !!item.result && !item.is_import).length,
-    count_block: contents.length - operations.length
+    count_owned: operations.filter(
+      item => !!item.result && (item.operation_type !== OperationType.INPUT || !item.is_import)
+    ).length,
+    count_block: contents.length - operations.length,
+    count_references: operations.filter(item => item.operation_type === OperationType.REFERENCE).length
  };

  return <OssStats stats={blockStats} className='pr-3' />;
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/side-panel/side-panel.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/side-panel/side-panel.tsx
@ -10,6 +10,7 @@ import { useAppLayoutStore, useMainHeight } from '@/stores/app-layout';
 import { usePreferencesStore } from '@/stores/preferences';
 import { PARAMETER } from '@/utils/constants';

+import { OperationType } from '../../../../backend/types';
 import { NodeType } from '../../../../models/oss';
 import { useOssEdit } from '../../oss-edit-context';

@ -80,7 +81,12 @@ export function SidePanel({ isMounted, className }: SidePanelProps) {
        <div className='text-center text-sm cc-fade-in'>Отсутствует концептуальная схема для выбранной операции</div>
      ) : selectedOperation && selectedSchema && debouncedMounted ? (
        <Suspense fallback={<Loader />}>
-          <ViewSchema schemaID={selectedSchema} isMutable={isMutable && !selectedOperation.is_import} />
+          <ViewSchema
+            schemaID={selectedSchema}
+            isMutable={
+              isMutable && (selectedOperation.operation_type !== OperationType.INPUT || !selectedOperation.is_import)
+            }
+          />
        </Suspense>
      ) : null}
      {selectedBlock ? <BlockStats target={selectedBlock} oss={schema} /> : null}
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/side-panel/toolbar-schema.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/side-panel/toolbar-schema.tsx
@ -227,7 +227,7 @@ export function ToolbarSchema({
          />
          <DropdownButton
            title='Перейти к концептуальной схеме'
-            text='перейти к схеме'
+            text='Открыть КС'
            icon={<IconRSForm size='1rem' className='icon-primary' />}
            onClick={navigateRSForm}
          />
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/oss-edit-state.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/oss-edit-state.tsx
@ -109,7 +109,7 @@ export const OssEditState = ({ itemID, children }: React.PropsWithChildren<OssEd
  }

  function canDeleteOperation(target: IOperation) {
-    if (target.operation_type === OperationType.INPUT) {
+    if (target.operation_type === OperationType.INPUT || target.operation_type === OperationType.REFERENCE) {
      return true;
    }
    return schema.graph.expandOutputs([target.id]).length === 0;
--- a/rsconcept/frontend/src/features/rsform/dialogs/dlg-edit-cst/form-edit-cst.tsx
+++ b/rsconcept/frontend/src/features/rsform/dialogs/dlg-edit-cst/form-edit-cst.tsx
@ -6,6 +6,7 @@ import { TextArea, TextInput } from '@/components/input';

 import { CstType, type IUpdateConstituentaDTO } from '../../backend/types';
 import { IconCrucialValue } from '../../components/icon-crucial-value';
+import { RSInput } from '../../components/rs-input';
 import { SelectCstType } from '../../components/select-cst-type';
 import { getRSDefinitionPlaceholder, labelCstTypification } from '../../labels';
 import { type IConstituenta, type IRSForm } from '../../models/rsform';
@ -97,9 +98,9 @@ export function FormEditCst({ target, schema }: FormEditCstProps) {
        name='item_data.definition_formal'
        render={({ field }) =>
          !!field.value || (!isElementary && !target.is_inherited) ? (
-            <TextArea
+            <RSInput
              id='dlg_cst_expression'
-              fitContent
+              noTooltip
              label={
                cst_type === CstType.STRUCTURED
                  ? 'Область определения'
@ -109,9 +110,9 @@ export function FormEditCst({ target, schema }: FormEditCstProps) {
              }
              placeholder={getRSDefinitionPlaceholder(cst_type)}
              className='max-h-15'
+              schema={schema}
              value={field.value}
              onChange={field.onChange}
-              error={errors.item_data?.definition_formal}
              disabled={target.is_inherited}
            />
          ) : (
--- a/rsconcept/frontend/src/stores/dialogs.ts
+++ b/rsconcept/frontend/src/stores/dialogs.ts
@ -11,6 +11,7 @@ import { type DlgCreateBlockProps } from '@/features/oss/dialogs/dlg-create-bloc
 import { type DlgCreateSchemaProps } from '@/features/oss/dialogs/dlg-create-schema';
 import { type DlgCreateSynthesisProps } from '@/features/oss/dialogs/dlg-create-synthesis/dlg-create-synthesis';
 import { type DlgDeleteOperationProps } from '@/features/oss/dialogs/dlg-delete-operation';
+import { type DlgDeleteReferenceProps } from '@/features/oss/dialogs/dlg-delete-reference';
 import { type DlgEditBlockProps } from '@/features/oss/dialogs/dlg-edit-block';
 import { type DlgEditOperationProps } from '@/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation';
 import { type DlgImportSchemaProps } from '@/features/oss/dialogs/dlg-import-schema';
@ -47,31 +48,32 @@ export const DialogType = {
  CREATE_SYNTHESIS: 9,
  EDIT_OPERATION: 10,
  DELETE_OPERATION: 11,
-  CHANGE_INPUT_SCHEMA: 12,
-  RELOCATE_CONSTITUENTS: 13,
-  OSS_SETTINGS: 14,
-  EDIT_CONSTITUENTA: 15,
+  DELETE_REFERENCE: 12,
+  CHANGE_INPUT_SCHEMA: 13,
+  RELOCATE_CONSTITUENTS: 14,
+  OSS_SETTINGS: 15,
+  EDIT_CONSTITUENTA: 16,

-  CLONE_LIBRARY_ITEM: 16,
-  UPLOAD_RSFORM: 17,
-  EDIT_EDITORS: 18,
-  EDIT_VERSIONS: 19,
-  CHANGE_LOCATION: 20,
+  CLONE_LIBRARY_ITEM: 17,
+  UPLOAD_RSFORM: 18,
+  EDIT_EDITORS: 19,
+  EDIT_VERSIONS: 20,
+  CHANGE_LOCATION: 21,

-  EDIT_REFERENCE: 21,
-  EDIT_WORD_FORMS: 22,
-  INLINE_SYNTHESIS: 23,
+  EDIT_REFERENCE: 22,
+  EDIT_WORD_FORMS: 23,
+  INLINE_SYNTHESIS: 24,

-  SHOW_QR_CODE: 24,
-  SHOW_AST: 25,
-  SHOW_TYPE_GRAPH: 26,
-  GRAPH_PARAMETERS: 27,
-  SHOW_TERM_GRAPH: 28,
-  CREATE_SCHEMA: 29,
-  IMPORT_SCHEMA: 30,
+  SHOW_QR_CODE: 25,
+  SHOW_AST: 26,
+  SHOW_TYPE_GRAPH: 27,
+  GRAPH_PARAMETERS: 28,
+  SHOW_TERM_GRAPH: 29,
+  CREATE_SCHEMA: 30,
+  IMPORT_SCHEMA: 31,

-  AI_PROMPT: 31,
-  CREATE_PROMPT_TEMPLATE: 32
+  AI_PROMPT: 32,
+  CREATE_PROMPT_TEMPLATE: 33
 } as const;
 export type DialogType = (typeof DialogType)[keyof typeof DialogType];

@ -104,6 +106,7 @@ interface DialogsStore {
  showCloneLibraryItem: (props: DlgCloneLibraryItemProps) => void;
  showCreateVersion: (props: DlgCreateVersionProps) => void;
  showDeleteOperation: (props: DlgDeleteOperationProps) => void;
+  showDeleteReference: (props: DlgDeleteReferenceProps) => void;
  showGraphParams: () => void;
  showOssOptions: () => void;
  showRelocateConstituents: (props: DlgRelocateConstituentsProps) => void;
@ -148,6 +151,7 @@ export const useDialogsStore = create<DialogsStore>()(set => ({
  showCloneLibraryItem: props => set({ active: DialogType.CLONE_LIBRARY_ITEM, props: props }),
  showCreateVersion: props => set({ active: DialogType.CREATE_VERSION, props: props }),
  showDeleteOperation: props => set({ active: DialogType.DELETE_OPERATION, props: props }),
+  showDeleteReference: props => set({ active: DialogType.DELETE_REFERENCE, props: props }),
  showGraphParams: () => set({ active: DialogType.GRAPH_PARAMETERS, props: null }),
  showOssOptions: () => set({ active: DialogType.OSS_SETTINGS, props: null }),
  showRelocateConstituents: props => set({ active: DialogType.RELOCATE_CONSTITUENTS, props: props }),
--- a/rsconcept/frontend/src/styling/reactflow.css
+++ b/rsconcept/frontend/src/styling/reactflow.css
@ -165,7 +165,8 @@
 }

 .react-flow__node-input,
-.react-flow__node-synthesis {
+.react-flow__node-synthesis,
+.react-flow__node-reference {
  border-radius: 5px;
  border-width: 0;